GT-3000 USER'S INSTRUCTION

The GT-3000 Gold Tester is a portable electronic device, developed by TRI Electronics, Inc., for efficient and quick determination of gold karat value (from 6 to 18 karat), and pure platinum. The GT-3000 Gold Tester also distinguishes solid gold from gold-plated items.

The GT-3000 test set consists of a display unit which operates on two 9-volt alkaline batteries, sensor with rotary cap to obtain a drop of conductive gel, and a tri-cable for connecting the unit to the sensor and test plate. (See diagram 1)

The following procedures must be followed step-by-step to perform tests:
1) Remove sensor nozzle and stationary/rotary (un-detachable parts!) caps by turning the lower light-colored barrel on the top of the sensor counter clockwise.
2) Fully insert the feed-screw engagement into the appropriate slot of the sensor's un-detachable stationary/rotary caps. (See diagram 2).
3) Remove the polyethylene tube cap and insert the tube, which is connected with stationary/rotary caps into the sensor. (See diagram 2).
4) Turn the brightly-colored barrel clockwise until fully seated.
5) Turn the dark-colored barrel counter clockwise until the first drop of gel appears at the sensor nozzle.
6) Connect the black wire to the sensor plug outlet, the black and red wire connector to the display unit, and red wire to the testing plate. (See diagram 1).
Turn the unit "ON". Now the unit is ready for testing.
Select and clean with eraser a testing point on the object; obtain one drop of gel by turning the sensor rotary cap (dark-colored barrel) counter clockwise until it clicks. Touch the sensor nozzle to a pre-selected testing point and press the "TEST" button.
Maintain sensor in the same vertical position for approximately 4-5 seconds while the instrument indicates the numbers on the LCD display. Refer to the karat table to convert this number into karat value.

1. Dispose a drop of the gel following each test.
2. Do not touch alligator clip with gel which may reduce a device reading.
3. Be sure that sensor nozzle opening is clean and open; otherwise, clean sensor nozzle with provided sensor nozzle cleaner before test.
4. Flat Herringbone gold chains require a special cleaning technique. To clean this type of chain for testing, put a small drop of nitric acid on the test spot and then dry this place with a paper towel. Be sure that alligator clip and sensor nozzle has good electrical contact with test object.
5. The Gold Tester is usually able to distinguish between gold-plated and gold-filled items. *
   
   In cases when it is unknown whether an object is solid gold or gold plated, the manufacturer recommends making two or three tests on the same point of the object with a thorough eraser cleaning before each test. If this item is gold plated the karatage value will decrease after each test. If the gold thickness layer is more than one (1) micron, carefully sand a small test point on an object with a fine file or make a tiny hole with a needle at the test point.
6. Do not turn sensor's dark-colored, top barrel clockwise to avoid damage of mechanism.
7. For direct factory replacement of polyethylene gel tube, call 1-858-571-4881 or you may use our Order Form or call your distributor.
8. The gel should be stored at temperature less than 80°F (26.6°C). For longevity of the gel life, the manufacturer recommends storing gel on the bottom of a refrigerator when gel is not in use.
9. Do not try to open or disassemble the display unit because it will damage the electronic parts and annul the manufacturer's warranty.

*  This device distinguishes gold-plated and/or gold filled layer up to .00004 in. thick (approximately one micron).
** Gel will occasionally clump in the sensor. It is recommended that you thoroughly clean the sensor with SC-10 cleaner at each gel replacement.

TRI Electronics Inc., as the manufacturer of the GT­3000" Gold Tester believes its instrument will provide a fast and reliable method of determining the karat value of gold when used in accordance with the provided instructions. TRI Electronics Inc. warrants that each instrument is free from defects in material and workmanship for a period of three (3) years from the date of purchase. This warranty applies to a GT-3000" Gold Tester that is not abused or improperly used and only if the device is used in accordance with the Owner's Manual furnished by TRI Electronics Inc. This warranty does not cover: any product where an attempt to disassemble the same is established; modification; alteration; unauthorized repair or service of the product or damages or defects resulting from accident or any events beyond the control of TRI Electronics Inc., nor does this warranty cover batteries or accessories.
In addition, TRI Electronics Inc., as the manufacturer, shall not be held legally liable or responsible for any error in determining the contents of gold and other precious metals through the use of the GT-30001-m Gold Tester nor for using the device in testing non-gold alloys or dental gold.

The purchaser may obtain information or assistance on the use of the GT-3000TH Gold Tester by calling 858-571-4881,
or by writing to:
TRI ELECTRONICS INC.
9570 Ridgehaven Court, Suite "A",
San Diego, California 92123
Telephone: 858-571-4881 FAX: 858-571-54-04
E-mail: products@trielectronics.com